/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.iceberg.orc;

import org.apache.orc.TypeDescription;

import java.util.List;

class RemoveIds
        extends OrcSchemaVisitor<TypeDescription>
{
    @Override
    public TypeDescription record(TypeDescription record, List<String> names, List<TypeDescription> fields)
    {
        TypeDescription struct = TypeDescription.createStruct();

        for (int i = 0; i < fields.size(); i++) {
            struct.addField(names.get(i), fields.get(i));
        }
        return struct;
    }

    @Override
    public TypeDescription list(TypeDescription array, TypeDescription element)
    {
        return TypeDescription.createList(element);
    }

    @Override
    public TypeDescription map(TypeDescription map, TypeDescription key, TypeDescription value)
    {
        return TypeDescription.createMap(key, value);
    }

    @Override
    public TypeDescription primitive(TypeDescription primitive)
    {
        return removeIcebergAttributes(primitive.clone());
    }

    private static TypeDescription removeIcebergAttributes(TypeDescription orcType)
    {
        orcType.removeAttribute(ORCSchemaUtil.ICEBERG_ID_ATTRIBUTE);
        return orcType;
    }
}
